chore(release): bump version to v2026.4.608 and update changelog}
- Bump package version from v2026.4.606 to v2026.4.608
- Add v2026.4.608 changelog entry: make Playwright base URL configurable via environment variable
- Update p3x-redis-ui-material dependency from ^2026.4.377 to ^2026.4.379
- Update p3x-redis-ui-server dependency from ^2026.4.323 to ^2026.4.324
- Update yarn.lock with new dependency versions
- Update build version references across all markdown files
- Remove erroneous non-changelog text from change-log.md